src/mesa/state_tracker/st_cb_texturebarrier.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2011 Marek Olšák <maraeo@gmail.com>
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL THE AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 /**
  30  * glTextureBarrierNV function
  31  *
  32  * \author Marek Olšák
  33  */
  34
  35
  36 #include "main/imports.h"
  37 #include "main/context.h"
  38
  39 #include "pipe/p_context.h"
  40 #include "pipe/p_defines.h"
  41 #include "st_context.h"
  42 #include "st_cb_texturebarrier.h"
  43
  44
  45 /**
  46  * Called via ctx->Driver.TextureBarrier()
  47  */
  48 static void
  49 st_TextureBarrier(struct gl_context *ctx)
  50 {
  51    struct pipe_context *pipe = st_context(ctx)->pipe;
  52
  53    pipe->texture_barrier(pipe, PIPE_TEXTURE_BARRIER_SAMPLER);
  54 }
  55
  56
  57 /**
  58  * Called via ctx->Driver.MemoryBarrier()
  59  */
  60 static void
  61 st_MemoryBarrier(struct gl_context *ctx, GLbitfield barriers)
  62 {
  63    struct pipe_context *pipe = st_context(ctx)->pipe;
  64    unsigned flags = 0;
  65
  66    if (barriers & GL_VERTEX_ATTRIB_ARRAY_BARRIER_BIT)
  67       flags |= PIPE_BARRIER_VERTEX_BUFFER;
  68    if (barriers & GL_ELEMENT_ARRAY_BARRIER_BIT)
  69       flags |= PIPE_BARRIER_INDEX_BUFFER;
  70    if (barriers & GL_UNIFORM_BARRIER_BIT)
  71       flags |= PIPE_BARRIER_CONSTANT_BUFFER;
  72    if (barriers & GL_TEXTURE_FETCH_BARRIER_BIT)
  73       flags |= PIPE_BARRIER_TEXTURE;
  74    if (barriers & GL_SHADER_IMAGE_ACCESS_BARRIER_BIT)
  75       flags |= PIPE_BARRIER_IMAGE;
  76    if (barriers & GL_COMMAND_BARRIER_BIT)
  77       flags |= PIPE_BARRIER_INDIRECT_BUFFER;
  78    if (barriers & GL_PIXEL_BUFFER_BARRIER_BIT) {
  79       /* The PBO may be
  80        *  (1) bound as a texture for PBO uploads, or
  81        *  (2) accessed by the CPU via transfer ops.
  82        * For case (2), we assume automatic flushing by the driver.
  83        */
  84       flags |= PIPE_BARRIER_TEXTURE;
  85    }
  86    /* GL_TEXTURE_UPDATE_BARRIER_BIT:
  87     * Texture updates translate to:
  88     *  (1) texture transfers to/from the CPU,
  89     *  (2) texture as blit destination, or
  90     *  (3) texture as framebuffer.
  91     * In all cases, we assume the driver does the required flushing
  92     * automatically.
  93     */
  94    /* GL_BUFFER_UPDATE_BARRIER_BIT:
  95     * Buffer updates translate to
  96     *  (1) buffer transfers to/from the CPU,
  97     *  (2) resource copies and clears.
  98     * In all cases, we assume the driver does the required flushing
  99     * automatically.
 100     */
 101    if (barriers & GL_CLIENT_MAPPED_BUFFER_BARRIER_BIT)
 102       flags |= PIPE_BARRIER_MAPPED_BUFFER;
 103    if (barriers & GL_QUERY_BUFFER_BARRIER_BIT)
 104       flags |= PIPE_BARRIER_QUERY_BUFFER;
 105    if (barriers & GL_FRAMEBUFFER_BARRIER_BIT)
 106       flags |= PIPE_BARRIER_FRAMEBUFFER;
 107    if (barriers & GL_TRANSFORM_FEEDBACK_BARRIER_BIT)
 108       flags |= PIPE_BARRIER_STREAMOUT_BUFFER;
 109    if (barriers & GL_ATOMIC_COUNTER_BARRIER_BIT)
 110       flags |= PIPE_BARRIER_SHADER_BUFFER;
 111    if (barriers & GL_SHADER_STORAGE_BARRIER_BIT)
 112       flags |= PIPE_BARRIER_SHADER_BUFFER;
 113
 114    if (flags && pipe->memory_barrier)
 115       pipe->memory_barrier(pipe, flags);
 116 }
 117
 118 void st_init_texture_barrier_functions(struct dd_function_table *functions)
 119 {
 120    functions->TextureBarrier = st_TextureBarrier;
 121    functions->MemoryBarrier = st_MemoryBarrier;
 122 }